Add DocSet for Elektra 0.8.23

[sanssecours]

👋 Hi,

this pull request adds a DocSet for the latest version of Elektra. If I should change anything, please just comment below.

By the way: The latest version of XCode does not include the docsetutil anymore. Do you have any advice on how to fix the generation of a DocSet via Doxygen, besides installing an old version of Xcode?

Kind regards,
René

[Kapeli]

Thank you! 👍

By the way: The latest version of XCode does not include the docsetutil anymore. Do you have any advice on how to fix the generation of a DocSet via Doxygen, besides installing an old version of Xcode?

To avoid keeping an old version of Xcode around, you can copy docsetutil out of it and into your PATH somewhere.

[sanssecours]

To avoid keeping an old version of Xcode around, you can copy docsetutil out of it and into your PATH somewhere.

Thank you for the advice. I already did that. If anybody else is interested, as far as I can tell, you need to keep the following files:

Developer/usr/bin/docsetutil
SharedFrameworks/DADocSetManagement.framework
SharedFrameworks/ktraceDT.framework
SharedFrameworks/SymbolicationDT.framework
SharedFrameworks/kperfdataDT.framework
SharedFrameworks/DVTInstrumentsFoundation.framework
SharedFrameworks/DVTFoundation.framework
SharedFrameworks/DVTInstrumentsUtilities.framework
SharedFrameworks/DTXConnectionServices.framework
SharedFrameworks/DADocSetAccess.framework
SharedFrameworks/CoreSymbolicationDT.framework
Frameworks/libswiftObjectiveC.dylib
Frameworks/libswiftXPC.dylib
Frameworks/libswiftCore.dylib
Frameworks/libswiftCoreGraphics.dylib
Frameworks/libswiftCoreData.dylib
Frameworks/libswiftDispatch.dylib
Frameworks/libswiftCoreFoundation.dylib
Frameworks/libswiftDarwin.dylib
Frameworks/libswiftIOKit.dylib
Frameworks/libswiftFoundation.dylib

. I extracted these files from XCode 9.2 and uploaded them here.